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File: todolib.php
<?php
// (c) Copyright 2002-2011 by authors of the Tiki Wiki CMS Groupware Project
// 
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// $Id: todolib.php 33195 2011-03-02 17:43:40Z changi67 $

class TodoLib
{
	// create a new todo
	function addTodo($after, $event, $objectType, $objectId = null, $from = null, $to = null) {
		$db = TikiDb::get();
		$query = 'INSERT INTO `tiki_todo` (`after`, `event`, `objectType`, `objectId`, `from`, `to`) VALUES (?, ?, ?, ?, ?, ?)';
		$from = json_encode($from);
		$to = json_encode($to);
		$db->query($query, array($after, $event, $objectType, $objectId, $from, $to));
		$query = 'SELECT `todoId` from `tiki_todo` where `after`=? and `event`=? and `objectType`=? and `objectId`=? and `from`=? and `to`=?';
		$id = $db->getOne($query, array($after, $event, $objectType, $objectId, $from, $to));
		return  $id;
	}
	// list of the todos of an object
	function listTodoObject($objectType = null, $objectId = null, $todoId = null) {
		$db = TikiDb::get();
		$query = 'SELECT * FROM `tiki_todo` tt ';
		$where = array();
		$bindvars = array();
		if (!empty($objectType)) {
			$where[] = 'tt.`objectType` = ?';
			$bindvars[] = $objectType;
			if (!empty($objectId)) {
				$where[] = 'tt.`objectId` = ?';
				$bindvars[] = $objectId;
			}
		}
		if (!empty($todoId)) {
			$where[] = 'tt.`todoId` = ?';
			$bindvars[] = $todoId;
		}
		if (!empty($where)) $query .= ' WHERE ' . implode(' AND ', $where);
		$query .= ' ORDER BY `todoId` asc';// so that actions arrive before notification
		$todos = $db->fetchAll($query, $bindvars);
		foreach( $todos as $i=>$todo ) {
			$todos[$i]['from'] = json_decode($todo['from'], true);
			$todos[$i]['to'] = json_decode($todo['to'], true);
			if ($objectType == null)  {
				if ($todo['objectType'] == 'todo') {
					$objects = $this->listTodoObject(null, null, $todo['objectId']);
					$todos[$i]['for'] = $objects[0];
				}
			} elseif ($objectType != 'todo') {
				$todos[$i]['notifs'] = $this->listTodoObject('todo', $todo['todoId']);
			}
		}
		return $todos;
	}
	// delete a todo
	function delTodo($id) {
		$db = TikiDb::get();
		$query = 'DELETE FROM `tiki_todo` WHERE `todoId`=? OR (`objectId`=? AND `objectType`=?)';
		$db->query($query, array($id, $id, 'todo'));
		TodoLib::cleanNotif();
	}
	function delObjectTodo($objectType, $objectId) {
		$db = TikiDb::get();
		$query = 'DELETE FROM `tiki_todo_notif` WHERE `objectType`=? AND `objectId` = ?';
		$db->query($query, array($objectType, $objectId));
		$query = 'DELETE FROM `tiki_todo` WHERE `objectType`=? AND `objectId`=?';
		$db->query($query, array($objectType, $objectId));
		TodoLib::cleanNotif();
	}
	// apply a todo
	function applyTodo($todo) {
		switch ($todo['objectType']) {
		case 'todo':
			// echo '<pre>ALREADY';print_r($this->alreadyNotif($todo['todoId'])); echo '</pre>';
			$todo['for']['after'] = $todo['after'];
			$objects = $this->listObjectsTodo($todo['for'], $this->alreadyNotif($todo['todoId']));

			if (!empty($objects)) {
				$func = 'notifyTodo_'.$todo['for']['objectType'];
				if (!method_exists($this, $func)) {
					return false;
				}
				$this->$func($todo, $objects);
			}
			// echo '<pre>MAIL';print_r($objects); echo '</pre>';
			break;
		default:
			$objects = $this->listObjectsTodo($todo);
			// echo '<pre>';print_r($objects); echo '</pre>';
			if (!empty($objects)) {
				$func = 'applyTodo_'.$todo['objectType'];
				if (!method_exists($this, $func)) {
					return false;
				}
				$this->$func($todo, $objects);
				$this->delNotif($todo['objectId']);
			}
		}
	}
	// list the objects selected by a todo
	function listObjectsTodo($todo, $except=null) {
		$func = 'listObjectsTodo_'.$todo['objectType'];
		if (!method_exists($this, $func)) {
			return false;
		}
		return $this->$func($todo, $except);
	}
	function alreadyNotif($todoId) {
		$db = TikiDb::get();
		$query = 'SELECT `objectId` FROM `tiki_todo_notif` WHERE `todoId`=?';
		$objects = $db->fetchAll($query, array($todoId));
		foreach ($objects as $i=>$object) {
			$objects[$i] = $object['objectId'];
		}
		return $objects;
	}
	function addNotif($todoId, $objectType, $objectId) {
		$db = TikiDb::get();
		$query = 'INSERT INTO `tiki_todo_notif` (`todoId`, `objectType`, `objectId`) VALUES(?,?,?)';
		$db->query($query, array($todoId, $objectType, $objectId));
	}
	function delNotif($todoId) {
		$db = TikiDb::get();
		$query = 'DELETE FROM `tiki_todo_notif` WHERE `todoId`=?';
		$db->query($query, array($todoId));
	}
	function cleanNotif() {
		$db = TikiDb::get();
		$query = 'DELETE FROM `tiki_todo_notif` WHERE `todoId` NOT IN (SELECT `todoId` FROM `tiki_todo`)';
	}
	function mailTodo($todo, $to, $default_subject='Change notification', $default_body='') {
		global $userlib, $tikilib, $prefs, $smarty;
		if (empty($to['email']) && !empty($to['user'])) {
			$to['email'] = $userlib->get_user_email($to['user']);
		}
		if (empty($to['email'])) {
			return;
		}
		$lang = empty($to['user']) ? $prefs['site_language']: $tikilib->get_user_preference($u, 'language', $prefs['site_language']);
		if (empty($todo['to']['subject'])) {
			$todo['to']['subject'] = tra($default_subject, $lang);
		}
		if (empty($todo['to']['body'])) {
			$todo['to']['body'] = tra($default_body, $lang);
		} else {
			$todo['to']['body'] = $smarty->fetchLang($lang, $todo['to']['body']);
		}
		include_once ('lib/webmail/tikimaillib.php');
		$mail = new TikiMail(empty($to['user'])?null:$to['user']);
		$mail->setSubject($todo['to']['subject']);
		$mail->setTextHtml($todo['to']['body']);
		$mail->send(array($to['email']));
	}
	/////////////////////////////////////////////////
	function listObjectsTodo_tracker($todo, $except=null) {
		global $tikilib;
		global $trklib; include_once('lib/trackers/trackerlib.php');
		switch ($todo['event']) {
		case 'creation':
			$filter = array('createdBefore' => $tikilib->now - $todo['after']);
			break;
		case 'modification':
			$filter = array('lastModifBefore' => $tikilib->now - $todo['after']);
			break;
		}
		$fieldId = $trklib->get_field_id_from_type($todo['objectId'], 'u', '1%');
		$objects = $trklib->list_items($todo['objectId'], 0, -1, 'created_asc', array($fieldId=>$trklib->get_tracker_field($fieldId)), '', '', $todo['from']['status'], '', '', $filter);
		// todo in list_items: 
		// return $objects['data'];
		if (empty($except))
			return $objects['data'];
		$res = array();
		foreach ($objects['data'] as $object) {
			if (!in_array($object['itemId'], $except)) {
				$res[] = $object;
			}
		}
		return $res;
	}
	function applyTodo_tracker($todo, $objects) {
		global $trklib; include_once('lib/trackers/trackerlib.php');
		$trklib->change_status($objects, $todo['to']['status']);
	}
	function notifyTodo_tracker($todo, $objects) {
		global $smarty, $tikilib, $prefs;
		global $trklib; include_once('lib/trackers/trackerlib.php');
		foreach ($objects as $object) {
			// get the creator
			$u = $object['field_values'][0]['value'];
			if (empty($u)) {
				$u = $object['itemUser'];
			}
			if (!empty($todo['to']['body'])) { // assign whatever needed
				$smarty->assign('todo_itemId', $object['itemId']);
				$status = $trklib->status_types();
				$smarty->assign('todo_tostatus', $status[$todo['for']['to']['status']]['label']);
				$smarty->assign('todo_fromstatus', $status[$todo['for']['from']['status']]['label']);
				$smarty->assign('todo_after', $todo['to']['before']);
				$smarty->assign('todo_desc', $trklib->get_isMain_value($object['trackerId'], $object['itemId']));
			}
			// mail creator
			$this->mailTodo($todo, array('user'=>$u), 'Tracker item status will be changed');
			//register as been mailed
			$this->addNotif($todo['todoId'], 'trackeritem', $object['itemId']);
		}
	}
}
global $totolib;
$todolib = new TodoLib;